Is GPT-5.2 Codex or Claude Opus 4.5 cheaper?

GPT-5.2 Codex is cheaper on output tokens ($1.14 vs $3.57 per 1M).

Which has the larger context window, GPT-5.2 Codex or Claude Opus 4.5?

GPT-5.2 Codex has the larger context window (400K tokens).

GPT-5.2 Codex vs Claude Opus 4.5

GPT-5.2 Codex is cheaper on output tokens, while GPT-5.2 Codex offers a larger context window. Choose GPT-5.2 Codex or Claude Opus 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-5.2 Codex	Claude Opus 4.5
Provider	QiHang	QiHang
Input / 1M tokens	$0.14	$0.71
Output / 1M tokens	$1.14	$3.57
Context window	400K	200K
Parameters	—	—
Open weights	No	No
Released	Dec 2025	Nov 2025

GPT-5.2 Codex details →Claude Opus 4.5 details →

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.